Port Serial Ata Notification Register (P#Sntf); Port Serial Ata Notification Register (P#Sntf) Field Description - Texas Instruments TMS320C6A816 Series Technical Reference Manual

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16.4.32 Port Serial ATA Notification Register (P#SNTF) (# = 0 or 1)
The port serial ATA notification register (P#SNTF) is used to determine if asynchronous notification
events have occurred for directly connected devices and devices connected to a Port Multiplier.
The P#SNTF register is shown in
31
15
LEGEND: R/W = Read/Write; R = Read only; W1C = Write 1 to clear; -n = value after reset
Table 16-35. Port Serial ATA Notification Register (P#SNTF) Field Description
Bit Field
31-2 Reserved
1-0 PMN[n]
SPRUGX9 – 15 April 2011
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Preliminary
Figure 16-33
Figure 16-33. Port Serial ATA Notification Register (P#SNTF)
Reserved
R-0
Value Description
0 Reserved.
0-1 PM Notify. Indicates whether a particular device with the corresponding PM Port number issued a
Set Device Bits FIS to the SATASS Port with the Notification bit set. Individual bits are cleared by
software writing 1s to the corresponding bit n positions. This bit field is reset on Global reset, but it
is not reset by Port reset (COMRESET) or software reset.
• PM Port 0 sets bit 0
• PM Port 1 sets bit 1
Note that two different types of ports exist. HBA Port (the device has the support for 2 HBA Ports)
and Port Multiplier Port (PMP). A Port of a Port Multiplier (PMP) connects a single device to a PM.
As many as 15 devices can be connected to a single HBA Port.
© 2011, Texas Instruments Incorporated
and described in Table
Reserved
R-0
16-35.
2 1
PMN[n]
R/W1C-0
Serial ATA (SATA) Controller
Registers
16
0
1623